Warning: file_put_contents(/home/www/wwwroot/zidian/201990.com/cache/5701a2d560c85718ab72eff837de64b1.txt): failed to open stream: No space left on device in /home/www/wwwroot/zidian/201990.com/index.php on line 55 sound ranging英英字典_sound ranging剑桥英语解释_sound ranging柯林斯英文解释_耀久九英英词典
1. N the determination of the location of a source of sound waves by measuring the time lapse between their transmission and their reception at microphones situated at three or more known positions 声波测距法